Obs. : 2022-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.787e+08
Venus      8.989e+08
Earth      8.197e+08
Mars       8.179e+08
Jupiter    8.246e+08
Saturn     8.486e+08
Uranus     8.105e+08
Neptune    8.246e+08
Pluto      8.787e+08